I forged immortality in my past life.

A global interdimensional war is held monthly. All adults are randomly transported into various military units. Those who survive the war gain superhuman power and return; those who die in the war lose a year of their lifespan in reality. Li Wu Hui transmigrates here and discovers that only he can consume his lifespan to reclaim his past life identity, descending as a BOSS! He once fought against an army of ten thousand, causing emperors to float in the air—[Undying Celestial Master]; he once confronted the gods on a celestial island and sank the giant serpent volcano—[Godslayer]; he once made a pact with billions of demons to devour the doomsday evil god—[Demon Hunter Evil Cultivator]; he once reached beyond time and opened the Mother River of True Spirit Spacetime—[Superpower Above], [Changshi Daozun], [Ancestor of Wizards], [Eternal Dragon], [Mechanical Sea Golden Immortal], [Far East Main God], [Unrepentant Demon Lord]... The past life is the future; accumulating countless lifetimes of arduous cultivation; occupying the past and future; I will prove the Dao in this lifetime!